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The Apache PDFBox library is an open source Java tool for working with PDF documents.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.edit.PDPageContentStream;
import org.apache.pdfbox.pdmodel.font.PDSimpleFont;
import org.apache.pdfbox.pdmodel.font.PDTrueTypeFont;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
/**
* This will take a text file and ouput a pdf with that text.
*
* @author Ben Litchfield
* @version $Revision: 1.4 $
*/
public class TextToPDF
{
private int fontSize = 10;
private boolean landscape = false;
private PDSimpleFont font = PDType1Font.HELVETICA;
/**
* Create a PDF document with some text.
*
* @param text The stream of text data.
*
* @return The document with the text in it.
*
* @throws IOException If there is an error writing the data.
*/
public PDDocument createPDFFromText( Reader text ) throws IOException
{
PDDocument doc = new PDDocument();
createPDFFromText(doc, text);
return doc;
}
/**
* Create a PDF document with some text.
*
* @param doc The PDF document that shall content the text.
* @param text The stream of text data.
*
* @throws IOException If there is an error writing the data.
*/
public void createPDFFromText( PDDocument doc, Reader text ) throws IOException
{
try
{
final int margin = 40;
float height = font.getFontDescriptor().getFontBoundingBox().getHeight()/1000;
PDRectangle mediaBox = PDPage.PAGE_SIZE_LETTER;
if (landscape)
{
mediaBox = new PDRectangle(mediaBox.getHeight(), mediaBox.getWidth());
}
//calculate font height and increase by 5 percent.
height = height*fontSize*1.05f;
BufferedReader data = new BufferedReader( text );
String nextLine = null;
PDPage page = new PDPage(mediaBox);
PDPageContentStream contentStream = null;
float y = -1;
float maxStringLength = page.getMediaBox().getWidth() - 2*margin;
// There is a special case of creating a PDF document from an empty string.
boolean textIsEmpty = true;
while( (nextLine = data.readLine()) != null )
{
// The input text is nonEmpty. New pages will be created and added
// to the PDF document as they are needed, depending on the length of
// the text.
textIsEmpty = false;
String[] lineWords = nextLine.replaceAll("[\\n\\r]+$", "").split(" ");
int lineIndex = 0;
while( lineIndex < lineWords.length )
{
StringBuilder nextLineToDraw = new StringBuilder();
float lengthIfUsingNextWord = 0;
boolean ff = false;
do
{
String word1, word2 = "";
int indexFF = lineWords[lineIndex].indexOf('\f');
if (indexFF == -1)
{
word1 = lineWords[lineIndex];
}
else
{
ff = true;
word1 = lineWords[lineIndex].substring(0, indexFF);
if (indexFF < lineWords[lineIndex].length())
{
word2 = lineWords[lineIndex].substring(indexFF + 1);
}
}
// word1 is the part before ff, word2 after
// both can be empty
// word1 can also be empty without ff, if a line has many spaces
if (word1.length() > 0 || !ff)
{
nextLineToDraw.append(word1);
nextLineToDraw.append(" ");
}
if (!ff || word2.length() == 0)
{
lineIndex++;
}
else
{
lineWords[lineIndex] = word2;
}
if (ff)
{
break;
}
if( lineIndex < lineWords.length )
{
// need cut off at \f in next word to avoid IllegalArgumentException
String nextWord = lineWords[lineIndex];
indexFF = nextWord.indexOf('\f');
if (indexFF != -1)
{
nextWord = nextWord.substring(0, indexFF);
}
String lineWithNextWord = nextLineToDraw.toString() + " " + nextWord;
lengthIfUsingNextWord =
(font.getStringWidth( lineWithNextWord )/1000) * fontSize;
}
}
while( lineIndex < lineWords.length &&
lengthIfUsingNextWord < maxStringLength );
if( y < margin )
{
// We have crossed the end-of-page boundary and need to extend the
// document by another page.
page = new PDPage(mediaBox);
doc.addPage( page );
if( contentStream != null )
{
contentStream.endText();
contentStream.close();
}
contentStream = new PDPageContentStream(doc, page);
contentStream.setFont( font, fontSize );
contentStream.beginText();
y = page.getMediaBox().getHeight() - margin + height;
contentStream.moveTextPositionByAmount(
margin, y );
}
//System.out.println( "Drawing string at " + x + "," + y );
if( contentStream == null )
{
throw new IOException( "Error:Expected non-null content stream." );
}
contentStream.moveTextPositionByAmount( 0, -height);
y -= height;
contentStream.drawString( nextLineToDraw.toString() );
if (ff)
{
page = new PDPage(mediaBox);
doc.addPage(page);
contentStream.endText();
contentStream.close();
contentStream = new PDPageContentStream(doc, page);
contentStream.setFont(font, fontSize);
contentStream.beginText();
y = page.getMediaBox().getHeight() - margin + height;
contentStream.moveTextPositionByAmount(margin, y);
}
}
}
// If the input text was the empty string, then the above while loop will have short-circuited
// and we will not have added any PDPages to the document.
// So in order to make the resultant PDF document readable by Adobe Reader etc, we'll add an empty page.
if (textIsEmpty)
{
doc.addPage(page);
}
if( contentStream != null )
{
contentStream.endText();
contentStream.close();
}
}
catch( IOException io )
{
if( doc != null )
{
doc.close();
}
throw io;
}
}
/**
* This will create a PDF document with some text in it.
*
* see usage() for commandline
*
* @param args Command line arguments.
*
* @throws IOException If there is an error with the PDF.
*/
public static void main(String[] args) throws IOException
{
TextToPDF app = new TextToPDF();
PDDocument doc = new PDDocument();
try
{
if( args.length < 2 )
{
app.usage();
}
else
{
for( int i=0; i " );
System.err.println( " -standardFont default:" + PDType1Font.HELVETICA.getBaseFont() );
for( int i=0; i The TTF font to use.");
System.err.println( " -fontSize default:10" );
System.err.println( " -landscape sets orientation to landscape" );
}
/**
* @return Returns the font.
*/
public PDSimpleFont getFont()
{
return font;
}
/**
* @param aFont The font to set.
*/
public void setFont(PDSimpleFont aFont)
{
this.font = aFont;
}
/**
* @return Returns the fontSize.
*/
public int getFontSize()
{
return fontSize;
}
/**
* @param aFontSize The fontSize to set.
*/
public void setFontSize(int aFontSize)
{
this.fontSize = aFontSize;
}
/**
* Tells the paper orientation.
*
* @return
*/
public boolean isLandscape()
{
return landscape;
}
/**
* Sets paper orientation.
*
* @param landscape
*/
public void setLandscape(boolean landscape)
{
this.landscape = landscape;
}
}